Four-degree-of-freedom mechanical floating connecting device

Abstract

The utility model discloses a four-degree-of-freedom mechanical floating connecting device, and belongs to the technical field of mechanical connectors. Comprising a bottom connecting piece, a top connecting piece and a four-degree-of-freedom connecting structure, and the top connecting piece is arranged above the bottom connecting piece through the four-degree-of-freedom connecting structure; the four-degree-of-freedom connecting structure comprises a Y-axis rod, an X-axis rod, a center block and a reset piece, the center line of the Y-axis rod is perpendicular to the center line of the X-axis rod, the two ends of the Y-axis rod are rotationally connected with the bottom connecting piece, the center block is slidably arranged on the Y-axis rod in a sleeving mode, the X-axis rod is arranged on the center block, and the end of the X-axis rod is rotationally connected with the top connecting piece; the top connecting piece can slide along the center line of the X-axis rod, and the reset piece can enable the center block and the top connecting piece to return to the position over the bottom connecting piece. The technical problem that plane angle error compensation cannot be achieved due to the fact that a traditional mechanical connector is small in freedom degree is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical connectors, in particular to a four-degree-of-freedom mechanical floating connection device. Background Art

[0002] Errors may occur in mechanical equipment due to factors such as design, assembly, and processing. A floating mechanical connector is a device used to compensate for connection errors between two components. However, existing floating connection devices have fewer degrees of freedom. For example, a cross slider can only be used for error adjustment in two vertical directions. Another example is an invention patent with announcement number CN105626708B, which discloses a floating connection device with two translational degrees of freedom, including an input layer, an intermediate layer, an output layer, a first connection plate, a second connection plate, a third connection plate, and a fourth connection plate. The two sides of the input layer and the output layer are connected to the first connection plate and the third connection plate respectively through four long hinges parallel to each other, forming a parallelogram mechanism with a certain thickness; the other two sides of the intermediate layer and the output layer are connected to the second connection plate and the fourth connection plate respectively through hinges, also forming a parallelogram mechanism with a certain thickness; the two parallelogram mechanisms are arranged orthogonally; the parallelogram mechanism with a certain thickness can swing freely on a plane orthogonal to the hinge and cannot move in other directions, thereby realizing a floating connection between the input layer and the output layer. The present invention can achieve strict and precise centering of the connected objects, so that the degrees of freedom are opened up and the manufacturing and installation errors are compensated to a certain extent. The above scheme also has only two degrees of freedom. When there is still a non-parallel error in the connection surface of the two connecting components, the mechanical connection device with two degrees of freedom cannot achieve surface contact with both components to be connected, but forms point or line contact, which has the problem of instability or uneven force on the components. Therefore, it is necessary to improve the existing mechanical connector to meet the use of the connection components when there is still a non-parallel error in the connection surface. Summary of the invention

[0003] The purpose of the utility model is to provide a four-degree-of-freedom mechanical floating connection device to solve the technical problem that the traditional mechanical connector has few degrees of freedom and cannot realize plane angle error compensation.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0005] A four-degree-of-freedom mechanical floating connection device comprises a bottom connection member, a top connection member and a four-degree-of-freedom connection structure, wherein the top connection member is mounted above the bottom connection member through the four-degree-of-freedom connection structure; the four-degree-of-freedom connection structure comprises a Y-axis rod, an X-axis rod, a center block and a reset member, wherein the center line of the Y-axis rod and the center line of the X-axis rod are perpendicular to each other, the two ends of the Y-axis rod are rotatably connected to the bottom connection member, the center block is slidably mounted on the Y-axis rod, the X-axis rod is mounted on the center block, the end of the X-axis rod is rotatably connected to the top connection member, and the top connection member can slide along the center line of the X-axis rod, and the reset member can restore the center block and the top connection member to be directly above the bottom connection member.

[0006] Furthermore, the reset member includes a first reset spring, a second reset spring and a plurality of horizontal reset spring columns; the first reset springs are arranged in pairs and are sleeved on the Y-axis rod, and one first reset spring is arranged on each of the opposite sides of the center block, one end of the first reset spring is abutted against the center block, and the other end is abutted against the bottom connecting member; the second reset springs are arranged in pairs and are sleeved on the X-axis rod, and one second reset spring is arranged on each of the opposite sides of the center block, one end of the second reset spring is abutted against the center block, and the other end is abutted against the top connecting member; a plurality of horizontal reset spring columns are evenly installed on the lower end surface of the top connecting member, and the lower ends of the horizontal reset spring columns are abutted against the bottom connecting member.

[0007] Furthermore, the first return spring and the second return spring are both mold springs.

[0008] Furthermore, the horizontal reset spring includes a fixed sleeve, a movable column and a third reset spring. The upper end of the fixed sleeve is connected to the top connecting piece, the movable column can be slidably mounted in the lower part of the fixed sleeve, and the third reset spring is installed in the upper part of the fixed sleeve. One end of the third reset spring is against the top connecting piece, and the other end is against the movable column.

[0009] Furthermore, first connecting side plates extending upward are provided on both sides of the bottom connecting member, and both ends of the Y-axis rod are rotatably connected to the corresponding first connecting side plates respectively, and first anti-slip limiting structures are provided at both ends of the Y-axis rod.

[0010] Furthermore, second connecting side plates extending downward are provided on both sides of the top connecting member, and both ends of the X-axis rod are respectively rotatably and slidably connected to the corresponding second connecting side plates, and second anti-slip limiting structures are provided at both ends of the X-axis rod.

[0011] Furthermore, a clamping hole is provided on the second connecting side plate, a clamping ring is mounted on the clamping hole, the clamping ring is clamped in the clamping hole, and the end of the X-axis rod is rotatably and slidably connected to the clamping ring.

[0012] Furthermore, the middle portion of the X-axis rod is disconnected to form two alternate disconnected ends, and the disconnected ends are fixedly connected to the center block; and the center line of the Y-axis rod and the center line of the X-axis rod are located in the same plane.

[0013] Furthermore, the bottom connecting member is provided with a plurality of pin holes.

[0014] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0015] 1. When the utility model is used, with the bottom connector as a fixed reference, the top connector can realize rotation along the center line of the X-axis rod, axial translation of the X-axis rod, rotation of the center line of the Y-axis rod and axial translation of the Y-axis rod through a four-degree-of-freedom connection structure, thereby realizing a four-degree-of-freedom floating connection, ensuring precise positioning even under small angles and plane deviations, and solving the technical problem that traditional mechanical connectors have few degrees of freedom and cannot realize plane angle error compensation.

[0016] 2. The utility model can realize the centering and resetting of the top connecting member by providing a first resetting spring, a second resetting spring and a plurality of horizontal resetting spring columns.

[0017] 3. The first side connecting plate, the second side connecting plate, the center block, the X-axis rod, the Y-axis rod, the first reset spring, the second reset spring, and a plurality of horizontal reset springs of the utility model are all located between the bottom connecting member and the top connecting member, and are approximately located at the same height layer, making the structure compact and convenient for miniaturization. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 This is a three-dimensional diagram from another perspective of the utility model;

[0020] Figure 3 It is a three-dimensional diagram of the internal structure of the utility model.

[0021] Figure 4 This is a three-dimensional cutaway diagram of the utility model.

[0022] In the accompanying drawings, 1-bottom connecting member, 2-top connecting member, 3-four-degree-of-freedom connecting structure, 11-first connecting side plate, 12-pin hole, 21-second connecting side plate, 22-retaining ring, 31-Y axis rod, 32-X axis rod, 33-center block, 34-first return spring, 35-second return spring, 36-horizontal return spring column, 37-first anti-slip limit structure, 38-second anti-slip limit structure, 39-plastic flat pad, 361-fixed sleeve, 362-movable column, 363-third return spring. DETAILED DESCRIPTION

[0023] The specific implementation of the utility model is further described below with reference to the accompanying drawings.

[0024] In the description of the present invention, it should be understood that the terms "center", "length", "width", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] See also Figures 1 to 4 A four-degree-of-freedom mechanical floating connection device includes a bottom connection member 1, a top connection member 2 and a four-degree-of-freedom connection structure 3, wherein the top connection member 2 is mounted above the bottom connection member 1 through the four-degree-of-freedom connection structure 3; the four-degree-of-freedom connection structure 3 includes a Y-axis rod 31, a Y-axis rod 32, a center block 33 and a reset member, wherein the center line of the Y-axis rod 31 and the center line of the Y-axis rod 32 are perpendicular to each other, both ends of the Y-axis rod 31 are rotatably connected to the bottom connection member 1, the center block 33 is slidably mounted on the Y-axis rod 31, the Y-axis rod 32 is mounted on the center block 33, the end of the Y-axis rod 32 is rotatably connected to the top connection member 2, and the top connection member 2 can slide along the center line of the Y-axis rod 32, and the reset member can restore the center block 33 and the top connection member 2 to be directly above the bottom connection member 1.

[0028] In this embodiment, the reset member includes a first reset spring 34, a second reset spring 35 and a plurality of horizontal reset springs 36; the first reset springs 34 are arranged in pairs and sleeved on the Y-axis rod 31, and a first reset spring 34 is arranged on opposite sides of the center block 33, one end of the first reset spring 34 abuts against the center block 33, and the other end abuts against the bottom connecting member 1 through a plastic flat pad 39; the second reset springs 35 are arranged in pairs and sleeved on the Y-axis rod 32, and a second reset spring 35 is arranged on opposite sides of the center block 33, one end of the second reset spring 35 abuts against the center block 33, and the other end abuts against the top connecting member 2; a plurality of horizontal reset springs 36 are evenly installed on the lower end surface of the top connecting member 2, and the lower end of the horizontal reset spring 36 abuts against the bottom connecting member 1. Specifically, the first reset spring 34 and the second reset spring 35 are both mold springs.

[0029] In this embodiment, the horizontal reset spring 36 includes a fixed sleeve 361, a movable column 362 and a third reset spring 363. The upper end of the fixed sleeve 361 is connected to the top connecting member 2, and the movable column 362 can be slidably mounted in the lower part of the fixed sleeve 361. The third reset spring 363 is installed in the upper part of the fixed sleeve 361. One end of the third reset spring 363 is against the top connecting member 2, and the other end is against the movable column 362.

[0030] In this embodiment, the bottom connecting member 1 is provided with first connecting side plates 11 extending upward on both sides, and the bottom connecting member 1 is in a U-shaped structure opening upward. The two ends of the Y-axis rod 31 are respectively connected to the corresponding first connecting side plates 11 for rotation, and the two ends of the Y-axis rod 31 are provided with first anti-slip limit structures 37, and specifically, the first anti-slip limit structures 37 are C-shaped retaining springs. The top connecting member 2 is provided with second connecting side plates 21 extending downward on both sides, and the top connecting member 2 is in a U-shaped structure opening downward. The two ends of the Y-axis rod 32 are respectively connected to the corresponding second connecting side plates 21 for rotation and sliding, and the two ends of the Y-axis rod 32 are provided with second anti-slip limit structures 38, and specifically, the second anti-slip limit structures 38 are a washer.

[0031] In this embodiment, a clamping hole is provided on the second connecting side plate 21, and a clamping ring 22 is installed on the clamping hole. The clamping ring 22 is clamped in the clamping hole, and the end of the Y-axis rod 32 is rotatably and slidably connected with the clamping ring 22. The clamping ring 22 is provided to facilitate the rotational connection and sliding connection between the Y-axis rod 32 and the second connecting side plate 21.

[0032] In this embodiment, the middle portion of the Y-axis rod 32 is disconnected to form two alternate disconnected ends, which are fixedly connected to the center block 33; and the center line of the Y-axis rod 31 and the center line of the Y-axis rod 32 are located in the same plane.

[0033] In this embodiment, a plurality of pin holes 12 are provided on the bottom connecting member 1. After the bottom connecting member 1 is positioned, positioning pins can be provided through the pin holes 12 to achieve positioning and installation of the bottom connecting member 1.

[0034] The above description is a detailed description of the preferred feasible embodiment of the utility model, but the embodiment is not used to limit the scope of the patent application of the utility model. All equivalent changes or modified changes completed under the technical spirit suggested by the utility model should fall within the patent scope covered by the utility model.

Claims

1. A four-degree-of-freedom mechanical floating connection device, characterized in that: It includes a bottom connecting member, a top connecting member and a four-degree-of-freedom connecting structure, wherein the top connecting member is installed above the bottom connecting member through the four-degree-of-freedom connecting structure; the four-degree-of-freedom connecting structure includes a Y-axis rod, an X-axis rod, a center block and a reset member, the center line of the Y-axis rod and the center line of the X-axis rod are perpendicular to each other, the two ends of the Y-axis rod are rotatably connected to the bottom connecting member, the center block is slidably mounted on the Y-axis rod, the X-axis rod is installed on the center block, the end of the X-axis rod is rotatably connected to the top connecting member, and the top connecting member can slide along the center line of the X-axis rod, and the reset member can restore the center block and the top connecting member to directly above the bottom connecting member.

2. A four-degree-of-freedom mechanical floating connection device according to claim 1, characterized in that: The reset member includes a first reset spring, a second reset spring and a plurality of horizontal reset spring columns; the first reset springs are arranged in pairs and are sleeved on the Y-axis rod, and one first reset spring is arranged on each of the opposite sides of the center block, one end of the first reset spring is abutted against the center block, and the other end is abutted against the bottom connecting member; the second reset springs are arranged in pairs and are sleeved on the X-axis rod, and one second reset spring is arranged on each of the opposite sides of the center block, one end of the second reset spring is abutted against the center block, and the other end is abutted against the top connecting member; a plurality of horizontal reset spring columns are evenly installed on the lower end surface of the top connecting member, and the lower ends of the horizontal reset spring columns are abutted against the bottom connecting member.

3. A four-degree-of-freedom mechanical floating connection device according to claim 2, characterized in that: The first return spring and the second return spring are both mold springs.

4. A four-degree-of-freedom mechanical floating connection device according to claim 2, characterized in that: The horizontal reset spring includes a fixed sleeve, a movable column and a third reset spring. The upper end of the fixed sleeve is connected to the top connecting piece. The movable column can be slidably mounted in the lower part of the fixed sleeve. The third reset spring is installed in the upper part of the fixed sleeve. One end of the third reset spring is against the top connecting piece, and the other end is against the movable column.

5. The four-degree-of-freedom mechanical floating connection device according to claim 1, characterized in that: The bottom connecting member is provided with first connecting side plates extending upward on both sides, and both ends of the Y-axis rod are rotatably connected to the corresponding first connecting side plates respectively, and both ends of the Y-axis rod are provided with first anti-slip limit structures.

6. A four-degree-of-freedom mechanical floating connection device according to claim 5, characterized in that: The top connecting member is provided with downwardly extending second connecting side plates on both sides, and the two ends of the X-axis rod are respectively rotatably and slidably connected with the corresponding second connecting side plates, and the two ends of the X-axis rod are provided with second anti-slip limit structures.

7. A four-degree-of-freedom mechanical floating connection device according to claim 6, characterized in that: The second connecting side plate is provided with a clamping hole, a clamping ring is mounted on the clamping hole, the clamping ring is clamped in the clamping hole, and the end of the X-axis rod is rotatably and slidably connected with the clamping ring.

8. A four-degree-of-freedom mechanical floating connection device according to claim 6, characterized in that: The middle part of the X-axis rod is disconnected to form two alternate disconnected ends, and the disconnected ends are fixedly connected to the center block; and the center line of the Y-axis rod and the center line of the X-axis rod are located in the same plane.

9. The four-degree-of-freedom mechanical floating connection device according to claim 1, characterized in that: The bottom connecting piece is provided with a plurality of pin holes.

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